Police are urgently appealing for bus passengers to come forward following the fatal stabbing of a 16-year-old on Thursday.

West Midlands Police said there were around 16 people travelling on the number 9 bus on the Hagley Road when the incident occurred at around 7.37am but only half have spoken to officers.

We know there are a number of passengers who were on the bus yesterday morning when Christina was attacked while she wassitting upstairs.

Some of these passengers were sitting downstairs on the bus and they haven't yet spoken to police. They may not even have known what happened but may have vital evidence and it is crucial they contact us as soonas possible on 101.

Yesterday's events were truly tragic and it's extremely important everyone comes forward and speaks to us.